What does the National Transportation Safety Board say about continuous smoke?
A. Beginning in the early 1980s, the National Transportation Safety Board (NTSB) became so concerned about continuous smoke that it recommended the Federal Aviation Administration “evaluate and change as necessary the procedures contained in the FAA-approved airplane flight manuals (AFM) of transport category airplanes relating to the control and removal of smoke to assure that these procedures address a continuing smoke source. . . .